Hairspring remover



June 26, 1928.

' 1,674,644 s. HELFGOTT HAIR SPRING REMOVER Filed Nov. 15, 1926 INVENTOR: S, HE L FGOTT 7 BY H15 ATTORNEY v UNITED *s T'A T' s.

Patented June 26, 1928.

PATENT. YoFFl A sonoivron nnnreo'rr, or YORK, "a. Y.

'I-IAIRSIRING immovnn.

Application filed November 15, 1926. Serial No. 148,389.

This invention relates to a hair s rin remover employed in watch repairing and watch mechanism assembly as has for its primary ob ect to provide a novel and 1mproved simple tool or implement whereby the said spring may be easily removed without distortion from the balance staff.

One of theobjects of my invention to provide a hair spring remover for watch makers use constructed and arranged with a pair of con'iplementary, knife edge jaws adapted to ride beneath the hair spring collet and gradually force it upwardly to remove the hair spring from the balance staffl A further ob ect of my lnvention 1s to.

provide a hair spring remover for watchmakers use embodying a pair of aws gradually tapering toward their ends and having a beveled knife edge on the inner edge of each of the jaws in which the hair spring collet may-be gradually forced upwardly as the jaws are closed or moved toward each other. I

To enable othersski'lled in the art to more fullycomprehe'nd the underlying features of my invention, reference is had to the accompanying drawing in which.

Fig. -1 is a perspective view showing the tool in its normal position.

Fig. 2 is a side view. Fig. 3 is a top view showing the tool and its manner of use to remove the hair spring. Fig. 4 is a sectional view taken on the line 4-4l of Fig. 2, through the jaws of the tool. Referring now to the drawings 5, 6 desig-' nate the handles of the toolwhich are bent or curved inwardly at 7,8'and terminate in cooperating, complementary curved jaws '9, 10 disposed at an obtuse angle relative to the handles. One of the handles is provided with an undercut recess for the opposite nected by a pivot screw 11.

Each jaw gradually tapers toward its extremity terminating in a very thin curved handle. said handles being pivotally con-' tip 12. The inner edges of the jaws are each.

beveled at 13 that when the jaws are closed, a shallow, dished seat is formed for the hair spring whereby the extreme'outer convolutions of the spring are curved slightly upwardly It will be noted and observed that the inner edges of the jaws do not overlap .but

may be brought together so that the collet of the hair spring may be engaged and as it rides up on the dished seat the hair spring may fly off from the balance wheel. The handles and incidentally the jaws of the tools'are normally separated by the spring 14 held by two pins 15'and the closing movement of the jaws may be further regulated by a stop screw 16.

described tool is unlike the common form of pincers, wire cutter pliers or grippers in that the jaws of the tool do not overlap and that the hair spring colletis not actually engaged by the instrument. Inother words,

the knife edges of the curved jaws and the beveled edges forming the seat permits the hair spring collet and hair spring to ride up on the dished seat and consequently moved upwardly and is disconnected from the watch mechanism. In using the tool, the handles are held in the fingers at an angle of substantially sixty degrees to the horizontal so that the lower surfaces of the above the pivotal connectionsya spring between said handles for normally maintaining said jaws in spaced relation said jawsv b-eingdisposed at an obtuse angle relative to the handles and provided with inner upwardly beveled edges forming a'dished seat when closed and terminating in a thin tip whereby the said jaws may ridebeneath the hair spring and engage the hair spring collet. 2. A hair spring. remover comprising a pair of pivotally connected handles having inwardly directed bent portions terminating in complementary jaws and operable from I wish to clearly point out that the above complementary jaws are somewhat below the v 1 plane of the tips of said jaws. The thinness V of the extreme outer ends of the jaws per-- apoint above the pivotal connection, aspring the said jaws inay ride beneath the hair between said handles for normally maintain spring and engage the hair spring collet and ing said jaws in spaced relation, said jaws stop limiting means comprising a set screw 10 being disposed at an obtuse angle relative to for said jaws.

5 said handles and provided with upwardly In testimony whereofI aflix my signature.

beveled edges forming a dished seat when closed and terminating in a thin tip whereby SOLOMON HELFGOTT. 

